Use the linear combination method to solve the system of equations. Explain each step of your solution.

2x-3y = 13

x+2y = - 4

Allen wants to buy some packages of trading cards that cost $4.99, and a soda that costs $1.29. He has $25. Use the equation 4.99p+1.

What are the x-intercepts of the graph of the function f (x) = x2 + 5x - 36?

The owner of the Rancho Bar X wishes to use 2400 yards of fencing to enclose a rectangular piece of grazing land along the straight portion of a river and then subdivide it into two parts by means of a piece of fencing perpendicular to the riverbank.

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded.

According to statistics, a person will devote 32 years to sleeping and watching TV. The number of years sleeping will exceed the number of years watching TV by 22. Over the lifetime, how many years will the person spend on each of these activities?

A woman said to her to her son," I was as old as you are now at the time of your birth". If the woman is 56 years old now, find her son's age 9 years ago

The price of an adult ticket to the museum is $6.00. The price of student ticket is $4.00. an expression to represent the cost of 4 adult tickets anc 8 student tickets.

Monica brought her turtle out the aquarium for 15 minutes every night for seven days how many total minutes did she broke gn her turtle out of the aquarium

V=s^2+1/2sh solve for h

A soccer field is bordered on three sides by a parking lot of width x. The total length of the field and parking lot is 300 m, and the total width is 200 m. The area of the field is 30,000 m2. How wide is the parking lot